Another algae ID post

[Thatdude156]

My tank is 5 months old and it seems like diatoms have developed into something else. The sand I’m not sure what it is and on the rock it’s patchy green. Before you ask about perimeters I’ll have to get back on that one.

 

[Thatdude156]

Likely diatoms and the beginnings of hair algae. Totally normal for a new dry rock tank.

I was thinking hair algae as well, but I’m not sure if I should be doing anything for this. I have a sump with skimmer and nothing else in it.